An accumulation tank for central heating and domestic hot water stores surplus thermal energy produced by a heat source. It is successfully used in many European countries and is becoming increasingly popular in modern homes. What exactly is an accumulation tank and why is it worth using?

How does an accumulation tank work?

An accumulation tank, also called a buffer tank, is an insulated steel cylinder that stores heated water. NOEL tanks are connected to the heating system and accumulate water heated by sources such as a boiler, a water-jacket fireplace or solar collectors. The stored energy is released only when it is needed for heating the building or preparing domestic hot water.

Thanks to thermal insulation, the tank limits heat loss and can return energy for a long time. This stabilizes the heating system and allows heat sources to work in better conditions.

Who needs a buffer tank?

A buffer tank is useful for people who value convenience and want to integrate several heat sources in one installation. It operates automatically, does not require manual control and releases heat when demand appears. It can also support flow-through domestic hot water preparation from different heat sources.

Main benefits

The most important benefit is maintaining a stable temperature even when heat production varies, for example when using a fireplace. The tank stores heat while it is being produced and delivers it later. This improves comfort, increases system safety and reduces unnecessary fuel consumption.